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# Inverse Functions Practice Questions

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Read the following study guide for a concept review:

Inverse Functions Study Guide

## Practice Questions

Evaluate each of the following inverse trigonometric functions.

 1 2 3 4 5 6 7 8 9 10

Evaluate each of the following.

 11 12 13 14 15 16 tan(sin–1(0.3)) 17 tan(tan–1(9.2)) 18 sin(tan–1(1.2))

Evaluate the following inverse trigonometric functions on a calculator.

 19 sin–1(0.81) 20 cos–1(–0.33) 21 22 23 24

Find the measure of the angle x in each triangle.

 25 26 27

 1 2 3 4 180° = π 5 6 0° = 0 radians 7 8 9 10 0° = 0 11 12 13 4√3 14 15 16 17 9.2 18 19 sin–1(0.8l) ≈ 54° ≈ 0.944 radians 20 cos–1(–0.33) ≈ 109.3° ≈ 1.907 radians 21 tan–1(4.2) ≈ 76.6° ≈ 1.337 radians 22 23 24 tan–1(–1.8) ≈ –60.95° ≈ –1.064 radians 25 x ≈ 23.58° ≈ 0.412 radians 26 x ≈ 56.25° ≈ 0.982 radians 27 x ≈ 15.26° ≈ 0.266 radians

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